| 年度 | 实际值 |
|---|---|
| 1978 | 633 |
| 1979 | |
| 1980 | 984 |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 1616 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 7378 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 11577 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 16044 |
| 2000 | 16273 |
| 2001 | 9749 |
| 2002 | 9376 |
| 2003 | 24353 |
| 2004 | 45520 |
| 2005 | 33581 |
| 2006 | 53338 |
| 2007 | 82916 |
| 2008 | 99544 |
| 2009 | 142710 |
| 2010 | 115201 |